Overview of power exhaust experiments in the COMPASS divertor with liquid metals

0533928 - ÚFP 2021 RIV US eng J - Journal Article
Dejarnac, Renaud - Horáček, Jan - Hron, Martin - Jeřáb, Martin - Adámek, Jiří - Atikukke, S. - Bartoň, Petr - Cavalier, Jordan - Cecrdle, J. - Dimitrova, Miglena - Gauthier, E. - Iafrati, M. - Imríšek, Martin - Marin Roldan, A. - Mazzitelli, G. - Naydenkova, Diana - Prishvitcyn, A. - Tomeš, Matěj - Tskhakaya, David - Van Oost, G. - Varju, Jozef - Veis, P. - Vertkov, A. - Vondráček, Petr - Weinzettl, Vladimír
Overview of power exhaust experiments in the COMPASS divertor with liquid metals.
Nuclear Materials and Energy. Roč. 25, December (2020), č. článku 100801. E-ISSN 2352-1791
R&D Projects: GA MŠMT(CZ) 8D15001; GA MŠMT(CZ) LM2018117; GA ČR(CZ) GA20-28161S; GA MŠMT(CZ) EF16_019/0000768
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : compass * cps * Divertor * elm * Liquid metal * Tokamak
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.320, year: 2020
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S2352179120300776?via%3Dihub

Power handling experiments with a special liquid metal divertor module based on the capillary porous system technology were performed in the tokamak COMPASS. The performance of two metals (Li and LiSn alloy) were tested for the first time in a divertor under ELMy H-mode conditions. No damage of the capillary mesh and a good exhaust capability were observed for both metals in two separate experiments with up to 12 MW/m2 of deposited perpendicular, inter-ELM steady-state heat flux and with ELMs of relative energy ~3% and a local peak energy fluence at the module ~15 kJ.m−2. No droplets were directly ejected from the mesh top surface and for the LiSn experiment, no contamination of the core and SOL plasmas by Sn was observed. The elemental depth profile analysis of 14 stainless-steel samples located around the vacuum vessel for each experiment provides information about the migration of evaporated/redeposited liquid elements.
Permanent Link: http://hdl.handle.net/11104/0312159